Re: Range violation error when reading from a file

[Samir via Digitalmars-d-learn]

On Sunday, 16 June 2019 at 23:55:41 UTC, lithium iodate wrote:
There is *very* likely to be a terminating new-line at the end 
of the file (many editors add one without asking!). If that the 
case, the last line seen by the loop will be empty and you must 
not attempt to access any elements.

On Monday, 17 June 2019 at 00:02:37 UTC, aliak wrote:
The fail bit is only set after reading fails. So after you read 
the last line, your eof will still return true, and hence your 
range violation.

Hmmmm...maybe you and lithium iodate were onto something.

Here is what the file looks like in vim:
    > line 1
    line 2
    line 3
    > line 4
    line 5
    ~
    ~
    ~

The "5" in the last line is the last character I can put my 
cursor on.

Also, if I run the program below with the same file, I don't get 
any range violation errors:

import std.stdio;
import std.string;

void main() {
    File file = File("test.txt");
    string line;

    while (!file.eof()) {
        line = file.readln().strip;
        //if (line[0] == '>') {         // line 10
        //    writeln(line[1..$]);
        //}
        //else {
            writeln(line);
        //}
    }
}

HOWEVER, the output is interesting.  There IS a blank line 
between the last line and the prompt:

    $ dmd -run readfile.d
    > line 1
    line 2
    line 3
    > line 4
    line 5

    $

Any suggestions on how to rectify?